Earnings Per Share Attributable to Common Shareholders - Basic Numerator (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 01, 2012		Jul. 03, 2011		Jul. 01, 2012		Jul. 03, 2011
EPS Numerator-Basic
Income from continuing operations	$ 3,194		$ 2,521		$ 4,918		$ 4,657
Less: Net income attributable to noncontrolling interests	7		8		16		20
Income from continuing operations attributable to Pfizer Inc.	3,187		2,513		4,902		4,637
Less: Preferred stock dividends-net of tax					1		1
Income from continuing operations attributable to Pfizer Inc. common shareholders	3,187		2,513		4,901		4,636
Discontinued operations-net of tax	66	[1]	97	[1]	145	[1]	195	[1]
Net income attributable to Pfizer Inc. common shareholders	$ 3,253		$ 2,610		$ 5,046		$ 4,831
EPS Denominator
Weighted-average number of common shares outstanding-Basic	7,476		7,875		7,506		7,929
Common-share equivalents: stock options, stock issuable under employee compensation plans and convertible preferred stock	61		60		64		51
Weighted-average number of common shares outstanding-Diluted	7,537		7,935		7,570		7,980
Stock options that had exercise prices greater than the average market price of our common stock issuable under employee compensation plans	216	[2]	280	[2]	216	[2]	281	[2]

[1] Includes the Nutrition business for all periods presented and the Capsugel business for 2011 only.

[2] These common stock equivalents were outstanding for the three and six months ended July 1, 2012 and July 3, 2011, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.